Steam-engine



(No Model.)

J. F. POND.

ASTEAM ENGINE.

Patented Oct. 9, 1883.

L11/vena? 'ii-Nifrnn Srnrss Fries..

iiarsfnr STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 286,482. dated October9, 1583.' v

(No model.)

I ttZZ whm/ it may concern.-

Be it known that I, JOSEPH F. POND, of Cleveland, inthe county ofCuyahoga and State of Ohio, have invented new and useful Improvements inSteam-Engines, of whichthe following is a speciiication.

My invention relates to steam engines 5 and the novelty consists in theconstruction, arrangement, and adaptation of parts, as will 1o be morefully hereinafter set forth, and specifically pointed out in the claims.It is well known that there is a latent poweror force in steam which isdeveloped when the steam-atoms are broken or disintegrated.

This breaking up of the atoms has before been attempted by a separateforce. f I seek to accomplish the same end by the force of the steamitself.

In a steam-cylinder having ports upon a 2c single. side the admittedsteam first strikes the side of the cylinder apd then reverberates. Iseek to obviate this by having the currents of steam meet their firstresistance at the center of the cylinder.

1 In steamengines where but one steam-oonnection leads to the steamchestonly that amount of pressure can be obtained which the capacity of that.connecting-pipe will allow.

I provide twosuchconnections, and conse- 3o quently feed to the cylindera greater amount of steam and pressure at the beginning of the stroke asthe crank passes over the center.

The 0lojeot, in general, of my invention is` cussion is produced, agiven amount of friction is obtained, which in every instancecreatesheat, thus producing in a degree superheated steam.

The invention contemplates developing the latent power of steam byliberating said power in the destruction or breaking up of the Itcontemplates arranging two steam-chests on opposite sides of thecylinder, said chests receiving equal pressures of steam from theboiler, and each having port-connections with the cylinder in the sametransverse plane, whereby the valves, which operate simultaneously todisclose either pair of ports, will admit the steam into the cylinder inopposite directions. Said currents of steam, meeting, `as aforesaid,will increase the steam-pressure within the cylinder to a point greaterthan the pressurel in either of the chests or within the boiler. f

It also contemplates means whereby the pistou is held in the center ofthe cylinder, and unequal friction, by reason of the piston being forcedtoward one side of the cylinder by the action of the steam enteringeither wholly or a preponderance thereof from one side of the cylinder,is prevented. n

To these ends the invention consists in the mechanisms fully illustratedin the accompanying drawings, which form a part of this speciiication,and in whichi Figure l is an elet/'ation taken at right angles to theplane of the main shaft, and Fig. 2 a central vertical section.

Referring to the drawings, in which similar letters of referenceindicate like parts in both the figures, A designates the cylinder,mounted `upon the frame B, and C is the pistonhead, mounted upon thestem c. This stem is properly connected by cranks (not shown) to theshaft S, to which, by eccentrics or cams and straps I and I', areconnected the valverods 71. h of the valves II H.

The cylinder A is provided with steamports D D E E', and the valves H Hoperate in steamrhests G G', arranged on opposite sides IOC Y v boiler.

of the cylinder. Separate pipes g and g connect the steam-chests withthe boiler, and separate exhausts R connect the cylinder with a mainexhaust, Q. The cylinder A is provided Vwith exhausts F and F.

Now, it will be observed that the valves H and H move simultaneously,and that each steam-chest receives its steam direct from the As'thevalves move together in either direction, one pair of steam-ports D D isuncovered, and the steam, at equal pressure, rushes in oppositedirections through said ports, the currents meeting in the center of thecylinder, directly behind the piston-head, holding the piston in thecenter of the cylinder, the concussionl caused by the Contact of the twocurrents breaking up the steam-atoms and liberating the latent forcetherein, the steam impacting behind the piston-head and in the center ofthe cylinder, thus obtaining at this objective point a pressure at themoment of contact greater than that in either of the chests or in theboiler.

Having thus fully described the invention, what I claim as new is- 1'.An engine-cylinder having only two inlet-ports located atdiametrically-opposite.

sides of the' cylinder, and provided with suitable valves forcontrolling said ports simultaneously, whereby the steam is conducted tothe center of the cylinder from two opposite sides, substantially asherein described.

2. An engine-cylinder provided with two separate steam chests located ondiametrically-opposite sides of the cylinder, two steaminlets and twoexhaust-ports, and suitable valves for simultaneously controlling saidports, substantially as described.

8. An engine-cylinder having two inlet-ports and separate steam-chestslocated at diametrically-opposite sides ofthe cylinder, suitable valvessimultaneously operated, and independent boiler-connections for eachchest, substantially as herein shown and described. y

4. An engine-cylinder having two ports and steam-chests located atdiametrically-opposite sides of the cylinder, suitable valves forcontrolling said ports, and separate boiler-connections provided withValves,` substantially as and for the purpose specied.

JOSEPH F. POND.

Witnesses: l

E. W. LAIRD, GEO. W. TIBBITTs.

